Essays about: "Swarm satellites"

Found 4 essays containing the words Swarm satellites.

  1. 1. Consensus Algorithm with Input Constraints and Collision Avoidance for Swarming Sunshade Satellites near the L1 point

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Felicia Törning; [2022]
    Keywords : Consensus algorithm; Formation control; Multi agent system; Solar sailing; Space based geoengineering; Konsensusalgoritm; Formationskontroll; multiagent system; solsegel;

    Abstract : Swarm Control Theory studies how multi-agent systems interact to solve tasks cooperatively. In this thesis it was studied how graph theory and the Dynamic Average Consensus Algorithm can be used to control swarming sunshade satellites near L1 for global temperature control, and if it would be suitable for the purpose. READ MORE

  3. 2. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Oscar Suneson; [2021]
    Keywords : fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Abstract : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. READ MORE

  4. 3. Numerical modelling of Langmuir probe measurements for the Swarm spacecraft

    University essay from Rymd- och plasmafysik

    Author : Marco Chiaretta; [2011]
    Keywords : Langmuir probe; ionosphere; numerical simulation; Swarm satellites;

    Abstract : This work studies the current collected by the spherical Langmuir probes to be mounted on the ESA Swarm satellites in order to quantify deviations from idealized cases caused by non-ideal probe geometry. The finite-element particle-in-cell code SPIS is used to model the current collection of a realistic probe, including the support structures, for two ionospheric plasma conditions with and without drift velocity. READ MORE

  5. 4. Electrostatic Forces for Swarm Navigation and Reconfiguration

    University essay from Blekinge Tekniska Högskola/Avdelningen för telekommunikationssystem

    Author : Muhammad Kamran Saleem; [2007]
    Keywords : Spacecraft Formation Flying; Coulomb Satellites; Hybrid Propulstion System;

    Abstract : In this study, we have developed a navigation scheme for a swarm of satellites equipped with both electrostatic and conventional actuators. The main features of two new concepts for formation flying control i.e. READ MORE